Ranking of hologram placement locations based on unexposed information

Techniques are provided to rank a set of candidate hologram placement locations based on a defined set of rules or criteria. An environment's spatial mapping is initially accessed. This spatial mapping describes the environment in a 3D representation. By analyzing this spatial mapping, an unordered set of candidate hologram placement locations is generated. These candidate hologram placement locations are locations that are identified from within the environment as being locations that are potentially suitable for hosting a hologram. To be selected, each of the candidate hologram placement locations is required to satisfy certain minimum criteria. Thereafter, these candidate hologram placement locations are then ranked based on a set of pre-defined hologram placement criteria to generate a set of ranked candidate hologram placement locations. This set of ranked candidate hologram placement locations is then exposed by causing the set to be accessible during a hologram placement event.